相关实验视频

Updated: May 28, 2025

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents

Investigation of Synaptic Tagging/Capture and Cross-capture using Acute Hippocampal Slices from Rodents

Published on: September 4, 2015

海马体MEF2C酸化调解了诱导的学习和记忆障碍中的突触可塑性

Shuo Yang¹, Yanhui Zhu¹, Jinmei Xiao¹

¹School of Public Health, Nanchang University, Nanchang, Jiangxi 330006, PR China; Jiangxi Provincial Key Laboratory of Preventive Medicine, School of Public Health, Nanchang University, Nanchang, Jiangxi 330006, PR China.

|February 13, 2025

概括

暴露于会通过破坏MEF2C酸化而损害记忆,这是大脑可塑性的关键因素. 这项研究揭示了如何影响神经元结构和功能,影响学习和记忆能力.

科学领域:

神经科学是一个神经科学.
环境毒理学环境毒理学
分子生物学分子生物学

背景情况:

(Pb) 是一种普遍存在的环境污染物,具有显著的神经毒性作用.
暴露与记忆障碍有关,但分子机制尚不清楚.
状脊柱动力学和MEF2C对记忆和学习至关重要.

研究的目的:

研究ERK诱导的MEF2C酸化在诱导的学习和记忆缺陷中的作用.
阐明通过影响MEF2C和神经元可塑性的分子途径.

主要方法:

已建立的老鼠和PC12细胞暴露模型.
分析了MEF2C酸化和表达水平.
研究了对ERK5,ARC表达和树突性可塑性的影响.

主要成果:

暴露于会通过影响ERK5表达来降低大鼠海马中的MEF2C酸化.
暴露降低了MEF2C在翻译层面的表达,影响了其转录活性.
观察到异常的ARC表达和改变的神经元树突性可塑性,与记忆缺陷相关.
调节MEF2C酸化影响了暴露于的PC12细胞中的神经元生长.

结论:

暴露于会通过破坏MEF2C酸化和下游信号传输,导致记忆障碍.
由于暴露而改变的树突性可塑性是由MEF2C路径失调调节的介导.
这些发现突出了MEF2C作为引起的神经毒性的潜在治疗标.

关键词:

学习和记忆障碍学习和记忆障碍在MEF2C中,MEF2C是 Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb Pb 酸化是指酸化的方法.突触性可塑性突触性可塑性

更多相关视频

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Investigating Long-term Synaptic Plasticity in Interlamellar Hippocampus CA1 by Electrophysiological Field Recording

Published on: August 11, 2019

Recording Synaptic Plasticity in Acute Hippocampal Slices Maintained in a Small-volume Recycling-, Perfusion-, and Submersion-type Chamber System

Recording Synaptic Plasticity in Acute Hippocampal Slices Maintained in a Small-volume Recycling-, Perfusion-, and Submersion-type Chamber System

Published on: January 1, 2018

相关概念视频

Long-term Depression

Long-term Depression

Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...

Long-term Potentiation

Long-term Potentiation

Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
Hebbian LTP
LTP can occur when...

Role of Hippocampus in Memory

Role of Hippocampus in Memory

The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...